Medical injector



FIG. 1 is a front plan view of the medical injector of my new design;

FIG. 2 is a left side view thereof,

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a top view thereof. 

The ornamental design for a medical injector, as shown and described. 